Removal

1. Disconnect battery ground cable.




2. Disconnect connector from front oxygen sensor.
3. Lift-up the vehicle.
4. Apply SUBARU CRC or its equivalent to threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.

SUBARU CRC (Part No.004301003)




5. Remove front oxygen (A/F) sensor.

CAUTION: When removing, do not force front oxygen (A/F) sensor in an unnatural way especially when exhaust pipe is cold, otherwise it will damage exhaust pipe.